15 March 1988 — Mikhail Gorbachev repudiates Brezhnev Doctrine justifying Soviet dominance over East Central Europe
9 November 1989 — Fall of Berlin Wall
3 October 1990 — Unification of East and West Germany
19 November 1990 — CFE and Charter of Paris for a New Europe signed at CSCE
28 June 1991 — COMECON disbanded
1 July 1991 — Warsaw Pact disbanded
21 August 1991 — Estonia, Latvia and Lithuania declare independence from USSR
8 December 1991 — Belavezha Accords signed, declaring end of USSR and establishment of CIS
25 December 1991 — Gorbachev resigns as president of Soviet Union
26 December 1991 — Official dissolution of Soviet Union
15 May 1992 — Collective Security Treaty (Tashkent Treaty) signed by Russia, Armenia, Kazakhstan, Kyrgyzstan, Tajikistan and Uzbekistan
24 June 1992 — Moscow brokers end to war between Georgians and South Ossetians
21 July 1992 — Ceasefire to end conflict in Moldova’s Transnistria province
21–22 June 1993 — Three Copenhagen Criteria for enlargement of the EU adopted at European Council in Copenhagen
10 January 1994 — NATO PfP programme launched
14 May 1994 — Moscow brokers end to war between Georgians and Abkhaz
5 December 1994 — Budapest Memorandum on Security Assurances for Ukraine signed by Russia, US and UK
1 January 1995 — CSCE renamed OSCE
27 May 1997 — NATO–Russia Founding Act on Mutual Relations, Cooperation and Security signed
31 May 1997 — Friendship treaty signed by Russian president Boris Yeltsin and Ukrainian president Leonid Kuchma
10 October 1997 — Georgia, Ukraine, Azerbaijan and Moldova form GUAM consultative forum
12 March 1999 — Czech Republic, Hungary and Poland join NATO
19 November 1999 — A/CFE signed at Istanbul summit of OSCE
31 December 1999 — Yeltsin resigns, Vladimir Putin becomes acting president of Russia
26 March 2000 — Putin elected president
7 October 2002 — Establishment of CSTO
23 November 2003 — Eduard Shevardnadze resigns as Georgian president, in the culminating moment of Rose Revolution
24 November 2003 — President Vladimir Voronin of Moldova scuttles ‘Kozak Memorandum’ plan for resolving the Transnistria dispute.
29 March 2004 — Bulgaria, Estonia, Latvia, Lithuania, Romania, Slovakia and Slovenia join NATO
1 May 2004 — Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia and Slovenia join EU
12 May 2004 — European Neighbourhood Policy announced
28 December 2004 — Viktor Yushchenko elected president of Ukraine in run-off prompted by Orange Revolution protests
3 April 2005 — Tulip Revolution in Kyrgyzstan forces resignation of president Askar Akaev
10 May 2005 — Russia and EU sign framework documents for four ‘Common Spaces’
31 December 2005 — First Russia–Ukraine gas war begins
12 December 2007 — Putin suspends implementation of CFE agreement
2 March 2008 — Dmitry Medvedev elected president of Russia
2–4 April 2008 — NATO Bucharest summit communiqué declares Georgia and Ukraine ‘will become’ members of Alliance
5 June 2008 — Medvedev calls for new European security treaty
8–12 August 2008 — Russia–Georgia war
26 August 2008 — Russia recognises independence of Abkhazia and South Ossetia
31 December 2008 — Second Russia–Ukraine gas war begins
7 May 2009 — Launch of EU Eastern Partnership initiative
9 June 2009 — Russia, Kazakhstan and Belarus announce formation of Customs Union
29 November 2009 — Russia publishes draft European Security Treaty
25 February 2010 — Viktor Yanukovych elected president of Ukraine
15 April 2010 — President Kurmanbek Bakiev ousted in Kyrgyzstan
21 April 2010 — Yanukovych signs 25-year extension of lease on Russian Black Sea Fleet base in Crimea in return for discounted gas price
31 May 2010 — Russia and EU launch Partnership for Modernization
20 November 2010 — NATO–Russia Council agrees to ‘work towards achieving a true strategic and modernised partnership’ at Lisbon summit
4 March 2012 — Putin elected to third term as president of Russia
30 March 2012 — Ukraine and EU initial AA
3 September 2013 — President Serzh Sargsyan announces Armenia will scrap AA and join EEU
21 November 2013 — Ukrainian government suspends preparations for AA with EU
28–29 November 2013 — At EU Eastern Partnership summit in Vilnius, Yanukovych refuses to sign AA despite intense pressure from EU leaders
30 November 2013 — Police crack down on students demonstrating in Kyiv against decision not to sign AA
17 December 2013 — Putin promises US$15bn in credits to Ukraine and cut in the gas price by one-third
18–20 February 2014 — Dozens of protesters and police killed in bloodiest days of the Maidan Revolution
21 February 2014 — Yanukovych and three opposition leaders sign agreement calling for government of national unity, constitutional reform and new presidential election
22 February 2014 — Yanukovych flees Kyiv; Verkhovna Rada votes to remove him from office
25–28 February 2014 — Russian reinforcements arrive in Crimea and fan out across the peninsula
1 March 2014 — Putin obtains formal approval from upper house of parliament to deploy military forces on Ukrainian territory
15 March 2014 — Russian Foreign Minister Sergei Lavrov presents US Secretary of State John Kerry with draft ‘Friends of Ukraine’ action plan
16 March 2014 — Contested plebiscite held in Crimea; overwhelming majority of voters said to support unification with Russia
17 March 2014 — US and EU enact sanctions against Russia
18 March 2014 — Putin delivers blistering speech denouncing Western foreign policy and announcing the ‘reunification’ of Crimea with Russia
15 April 2014 — Ukrainian government launches ‘anti-terrorist operation’ against Russia-backed anti-Maidan protesters who had taken up arms and seized administrative buildings in southern and eastern Ukraine
25 May 2014 — Petro Poroshenko elected president of Ukraine
27 June 2014 — Georgia, Moldova and Ukraine sign AAs with EU
16 July 2014 — US Treasury Department implements sanctions on Russia’s financial, defence and energy sectors
17 July 2014 — Downing of Malaysia Airlines passenger jet over the Donbas
7 August 2014 — Russia retaliates against sanctions with bans on imports of agricultural goods and foodstuffs
2 September 2014 — Separatist counter-offensive, backed by Russia, ends in major Ukrainian defeat at Ilovaisk
5 September 2014 — Representatives of Ukraine, Russia, the DNR and LNR sign ceasefire in Minsk, Belarus (‘Minsk I’)
1 January 2015 — EEU launched
14 January–20 February 2015 — Second Russian direct military intervention ends in capture of Debaltseve
12 February 2015 — Angela Merkel, François Hollande, Putin and Poroshenko agree on second peace plan (‘Minsk II’)
12 August 2015 — Kyrgyzstan joins EEU
21 December 2015 — Russia–Ukraine–EU trade talks break down in acrimony
1 January 2016 — Ukrainian DCFTA goes into effect; Russia suspends CIS trade preferences for Ukraine in retaliation