Armenian police detained 88 people at a protest in the capital Yerevan by demonstrators demanding the resignation of Prime Minister Nikol Pashinyan over his decision to cede several border villages to Azerbaijan.
Armenia said last month it would return the uninhabited villages in what both sides said was an important milestone as they edge towards a peace deal after fighting two wars since the collapse of the Soviet Union.
The decision has angered many in Armenia. Protesters led by a senior Armenian cleric reached Yerevan on Thursday after walking for several days from a village in the country's northeast, a distance of some 100 miles (160 km).
Archbishop Bagrat Galstanyan called for Prime Minister Pashinyan's resignation at rally of thousands of supporters, who he encouraged to begin acts of civil disobedience aimed at toppling the government.
Opposition parties in Armenia's parliament have said they will try to begin impeachment proceedings against Pashinyan, whose Civil Contract party retains a majority of lawmakers, and is unlikely to break with him.
Armenia is a treaty ally of Russia and traditionally Moscow's closest partner in the South Caucasus, but bilateral relations have sharply deteriorated in recent months as Yerevan has sought to build ties with the West, blaming Russia for failing to defend it from Azerbaijan.
US and Iran have agreed on a framework to end their war, officials announced on Sunday, including a halt on the US blockade of Iran and a reopening of the Strait of Hormuz, with an official signing scheduled on Friday in Switzerland.
British Prime Minister Keir Starmer said on Monday he would ban social media sites for under-16s and impose restrictions on gaming and livestreaming platforms, in some of the world's most far-reaching online restrictions to date.
A 1,000-year-old monastery that symbolises Ukraine's spiritual and cultural heritage was badly damaged in the heaviest Russian aerial attack on Kyiv in two weeks, authorities said on Monday, while 10 people were killed nationwide in the overnight strikes.
President Donald Trump criticised an Israeli strike on Lebanon that could complicate attempts to finalise a framework deal between the United States and Iran on Sunday on ending their war, but said an agreement was nonetheless close.
The number of confirmed Ebola cases in Democratic Republic of Congo has increased to 782 after 72 new cases were documented in 24 hours, one of the biggest single-day jumps during the ongoing outbreak, government data showed on Sunday.
Work on Al Maktoum International Airport expansion is on schedule, with Phase 1 set to begin operations in 2032, announced His Highness Sheikh Hamdan bin Mohammed bin Rashid Al Maktoum, Dubai's Crown Prince and UAE's Deputy Prime Minister.
Dr Anwar Gargash, diplomatic advisor to the UAE president, took to social media on Sunday to commend the UAE leaders for handling the regional crisis with "wisdom and steadfastness", as "we approach the signing of the long-awaited agreement between Washington and Tehran".