Negotiations hampered by disagreement over size of enrichment programme for Iran

Minister for Foreign Affairs Charlie Flanagan says Ireland will provide additional €2.5m

Polish president of European Council ready to ‘take on the concerns of the UK’

Donald Tusk is “definitely considering” the job and “many leaders” are urging him to take it

Kiev sees unapproved crossing of hundreds of military trucks as ‘direct invasion’

Israel pounds neighbourhoods, hospital as Palestinian death toll passes 650

Foreign ministers propose deeper sectoral sanctions after MH17 crash

Teenager held on terrorism charges since protest against ousting of former president Mohamed Morsi

Van Rompuy successor decision expected to be deferred at Brussels meeting

Foreign ministers in Vienna for new round of nuclear talks with Iran

White House, Pentagon at odds with secretary of state on possible military co-operation

At least two dead as tensions heighten ahead of presidential poll on Sunday

Fears of further confrontations rise after deaths of about 80 over weekend

Fighting in Mariupol leaves up to 20 pro-Moscow activists dead on eve of separatist vote

David O’Sullivan will commence four-year role in September

Pro-Russian activists seize regional headquarters in Ukrainian town of Luhansk

Senior official David O’Sullivan to take up four-year position in September

Geneva talks end with deal to ‘de-escalate tensions and boost security for all citizens’

Deeper sanctions on Russia unlikely

Nato defends bolstering of troops

Ireland not suspending Ugandan aid over homophobic measures, says Joe Costello

Russian and US foreign ministers seek deal to reduce tension over annexation of Crimea

Forty days after 100 killed, protesters are asking if new regime is better than old one

Paschal Donohoe defends EU decision not to include Putin allies targeted by US over Crimea incursion

Cairo-brokered truce aims to end worst flare-up of border violence since 2012

Catherine Ashton says meetings with top officials ‘difficult, challenging’

Centre-right politicians from all over Europe are converging on Dublin – we explain why

Europe Letter: as the UK tries to change its relationship with the EU, sympathetic voices at the top are important

European leaders hope to see ‘de-escalation’ of situation on Crimea

Tánaiste describes situation in Ukraine as the ‘worst crisis since the end of the Cold War’

UK among countries expected to call for asset freezes at emergency meeting

Opinion: Role of German, French and Polish foreign ministers was highly significant

Fugitive president’s whereabouts still a mystery as close aide ‘shot after resigning’

Acting interior minister says former president suspected of involvement in ‘mass murder’

Timetable and framework for negotiating a comprehensive agreement is agreed

Sanctions may be considered for the first time

President Yanukovich and opposition agree a 'truce' as West toughens line against Kiev

Americans blame Russia for bugging call

Foreign minister says Germany has to be ready if the situation does not improve

US, EU say Moscow must not strong-arm Kiev into an unpopular alliance