The Greek navy said the collision in Greek waters southeast of the island of Lesbos was caused by the Turkish ship breaching international shipping safety rules. The incident comes amid heightened tension between Greece and Turkey over Aegean territorial rights.
Discussions focussed on the political and humanitarian situation in Yemen, but they also came at a time of increasing concerns about the future of the nuclear deal between Iran and the international community.
A defiant Nikol Pashinyan has called for a general strike in Armenia starting on 2 May, when addressing thousands of supporters after parliament failed to elect him as prime minister, as political crisis in Armenia deepens
"The security architecture in the South Caucasus will remain volatile and the three countries need to be very cautious in their foreign policy choices", argues Benyamin Poghosyan in this op-ed
The big question will be whether the ruling Republican Party of Armenia, which has been rattled by the street protests, and which saw its leader resigning as prime minister last week, will endorse Pashinyan too, even if reluctantly.
The show of strength confirmed that Pashinyan's movement was not limited to the capital Yerevan, but stretched to the cities, towns and villages throughout the country.