Consider the following countries: I. Austria II. Bulgaria III. Croatia IV. Serbia V. Sweden VI. North Macedonia How many of the above are members of the North Atlantic Treaty Organization?
Contents15
- AOnly three
- BOnly four
- COnly five
- DAll the six
Show answer
Answer: (B) Only four
Let's check each country's NATO membership status:
(I) Austria — NOT a NATO member.
Austria has been constitutionally neutral since 1955 (the Austrian State Treaty).
It is an EU member but has maintained its military neutrality and has not joined NATO. ✗
(II) Bulgaria — NATO member since 2004.
Bulgaria joined NATO as part of the major eastern expansion round. ✓
(III) Croatia — NATO member since 2009.
Croatia joined along with Albania. ✓
(IV) Serbia — NOT a NATO member.
Serbia maintains military neutrality and has historically close ties with Russia.
The 1999 NATO bombing of Yugoslavia/Serbia during the Kosovo War makes NATO membership politically very difficult in Serbia. ✗
(V) Sweden — NATO member since 2024.
Sweden abandoned its long tradition of military non-alignment and officially joined NATO in March 2024, prompted by Russia's invasion of Ukraine.
Finland had joined earlier in April 2023. ✓
(VI) North Macedonia — NATO member since 2020.
After resolving the long-standing name dispute with Greece (changing its name from 'Macedonia' to 'North Macedonia' under the Prespa Agreement of 2018), it was able to join NATO. ✓
Four countries (Bulgaria, Croatia, Sweden, North Macedonia) are NATO members.
Answer is (b).
NATO expanded significantly after Russia's 2022 invasion of Ukraine, with Finland joining in April 2023 and Sweden in March 2024, ending decades of Nordic neutrality.
The question tests knowledge of NATO's recent expansion versus countries that remain neutral like Austria and Serbia, which maintain different security policies despite being in Europe.
Students must distinguish between EU membership and NATO membership, as some European countries join one organization but not the other for historical or constitutional reasons.
NATO Membership & Current Status
World Affairs (International Relations) North Atlantic Treaty Organization NATO members
NATO Membership: Current Status & Key Facts for UPSC
NATO has 32 members as of 2024 (started with 12 in 1949)
Article 5 provides collective defense — attack on one is attack on all
Latest members: Sweden (2024) and Finland (2023) after Russia-Ukraine war
Requires unanimous consent of all existing members for new admissions
What is NATO
NATO (North Atlantic Treaty Organization) is a military alliance formed in 1949 for collective defense against Soviet threat. The core principle is Article 5 — an armed attack against one member is considered an attack against all members.
Countries from Question: NATO Status
Country | NATO Member? | Year Joined | Key Point |
|---|---|---|---|
Austria | ❌ No | — | Constitutionally neutral since 1955 |
Bulgaria | ✅ Yes | 2004 | Eastern expansion round |
Croatia | ✅ Yes | 2009 | Joined with Albania |
Serbia | ❌ No | — | Maintains neutrality, 1999 NATO bombing legacy |
Sweden | ✅ Yes | March 2024 | Abandoned neutrality after Ukraine war |
North Macedonia | ✅ Yes | 2020 | After resolving Greece name dispute |
Key NATO Expansion Phases
1999: Czech Republic, Hungary, Poland (first post-Cold War expansion)
2004: Bulgaria, Estonia, Latvia, Lithuania, Romania, Slovakia, Slovenia (largest single expansion)
2009: Albania, Croatia
2017: Montenegro
2020: North Macedonia (after Prespa Agreement resolved Greece dispute)
2023-24: Finland and Sweden (response to Russia-Ukraine war)
Austria vs Australia: Austria is the European neutral country, not a NATO member
Sweden joined in 2024, not earlier — its neutrality lasted until Ukraine war
Serbia vs other Balkans: Serbia remains non-aligned despite neighbors joining NATO
North Macedonia vs Macedonia: Name change in 2018 was key to NATO membership
Count carefully: 4 out of 6 countries in the question are NATO members
European Neutrality & Non-Alignment
World Affairs (International Relations) Austria Sweden neutral
European Neutrality: Austria, Sweden & Changing Dynamics
Austria has constitutional neutrality since 1955 State Treaty
Sweden abandoned neutrality in 2024 to join NATO after Ukraine war
Russia-Ukraine war ended many European neutrality traditions
Switzerland remains neutral and is not in EU or NATO
What is Military Neutrality
Military neutrality means a country does not participate in wars between other states and does not join military alliances. Some countries like Austria have constitutional neutrality (legally binding), while others had policy neutrality (political choice).
European Neutral Countries: Then vs Now
Country | Neutrality Status | EU Member? | NATO Member? | Key Change |
|---|---|---|---|---|
Austria | Constitutional (since 1955) | ✅ Yes | ❌ No | Maintains neutrality despite EU membership |
Sweden | Ended 2024 | ✅ Yes | ✅ Yes (2024) | Joined NATO after 200+ years neutrality |
Finland | Ended 2023 | ✅ Yes | ✅ Yes (2023) | Joined NATO after Russia invaded Ukraine |
Switzerland | Active neutrality | ❌ No | ❌ No | Remains fully neutral |
Ireland | Military neutrality | ✅ Yes | ❌ No | EU member but not NATO |
Why Countries Chose Neutrality
Austria (1955): Condition for Soviet withdrawal after WWII — constitutionally mandated
Sweden: Historical policy to avoid conflicts — worked during both World Wars
Finland: Finlandization — balanced between Soviet Union and West during Cold War
Switzerland: Permanent neutrality since 1815 Congress of Vienna
Austria ≠ Australia: Austria is the European neutral country near Germany
Sweden changed in 2024: No longer neutral after joining NATO
EU membership ≠ NATO membership: Austria and Ireland are EU but not NATO
Constitutional vs policy neutrality: Austria's is legally binding, others were political choices
Balkans NATO Integration
World Affairs (International Relations) Croatia Serbia North Macedonia Bulgaria
Balkans & NATO: Integration Success & Holdouts
Most Balkan countries joined NATO between 2004-2020
Serbia remains non-aligned due to 1999 NATO bombing legacy
North Macedonia joined in 2020 after resolving Greece name dispute
Bosnia remains outside NATO due to internal divisions
Balkan NATO Journey
After Yugoslavia's breakup in the 1990s, most successor states pursued Euro-Atlantic integration (EU + NATO membership). The 1999 Kosovo War was a turning point — NATO bombed Serbia to stop ethnic cleansing, creating lasting divisions in the region.
Balkan Countries: NATO Status
Country | NATO Member | Joined Year | Key Challenge/Factor |
|---|---|---|---|
Bulgaria | ✅ Yes | 2004 | Part of major eastern expansion |
Croatia | ✅ Yes | 2009 | After resolving border issues with Slovenia |
North Macedonia | ✅ Yes | 2020 | Prespa Agreement solved Greece naming dispute |
Albania | ✅ Yes | 2009 | Joined with Croatia |
Montenegro | ✅ Yes | 2017 | Despite Russian opposition |
Slovenia | ✅ Yes | 2004 | First Yugoslav successor to join |
Serbia | ❌ No | — | 1999 NATO bombing legacy, pro-Russian stance |
Bosnia | ❌ No | — | Internal ethnic divisions block consensus |
Why Serbia Stays Out
1999 NATO bombing: 78-day campaign against Serbia during Kosovo War creates lasting resentment
Kosovo issue: Serbia doesn't recognize Kosovo independence, sees NATO as occupying force there
Russian ties: Serbia maintains close relations with Russia, buys Russian weapons
Public opinion: Majority of Serbs oppose NATO membership due to historical grievances
Serbia vs other Balkans: Serbia is the major Balkan holdout from NATO
North Macedonia timing: Joined in 2020, not earlier — name dispute with Greece was the barrier
Bulgaria joined early: In the 2004 expansion, not recently
Croatia ≠ Serbia: Croatia joined NATO in 2009, Serbia remains outside
NATO Expansion Timeline
World Affairs (International Relations)
NATO Expansion: From 12 to 32 Members (1949-2024)
NATO expanded from 12 founding members (1949) to 32 members (2024)
Biggest expansion: 2004 with 7 new Eastern European members
Latest: Finland (2023) & Sweden (2024) after Russia invaded Ukraine
Russia opposes NATO expansion as threat to its sphere of influence
Why NATO Expanded
After the Cold War ended (1991), former Warsaw Pact countries sought security guarantees from the West. NATO expansion was driven by these countries' requests for membership, not Western pressure — they feared Russian resurgence.
NATO Expansion Timeline
%%{init: {"flowchart": {"wrappingWidth": 460}}}%%
flowchart TD
s1["`**1949: Foundation**
**12 founding members** including US, UK, France, Italy, Canada`"]
s2["`**1952: Mediterranean**
**Greece & Turkey** join to secure southern flank`"]
s3["`**1955: Germany**
**West Germany** joins, prompting Soviet creation of Warsaw Pact`"]
s4["`**1982: Iberia**
**Spain** joins (Portugal was founding member)`"]
s5["`**1999: First Post-Cold War**
**Czech Republic, Hungary, Poland** — former Warsaw Pact members`"]
s6["`**2004: Major Eastern Expansion**
**7 countries**: Bulgaria, Estonia, Latvia, Lithuania, Romania, Slovakia, Slovenia`"]
s7["`**2009: Balkans**
**Albania & Croatia** complete Balkan integration`"]
s8["`**2017: Montenegro**
Despite Russian opposition and coup attempt`"]
s9["`**2020: North Macedonia**
After resolving **Greece naming dispute** via Prespa Agreement`"]
s10["`**2023-24: Nordic**
**Finland (2023) & Sweden (2024)** end neutrality after Ukraine war`"]
s1 --> s2
s2 --> s3
s3 --> s4
s4 --> s5
s5 --> s6
s6 --> s7
s7 --> s8
s8 --> s9
s9 --> s1032 members total as of 2024, not 30 — include Finland and Sweden
2004 was biggest expansion: 7 countries, not the recent additions
Unanimous consent required: Any existing member can veto new applications
Finland joined first (2023), then Sweden (2024) — not together