A group of US-bound Central American migrants has been met with truncheons and tear gas in Guatemala, where security forces blocked their path.
The United States and several European governments have demanded the release of opposition leader Alexei Navalny from Russian detention.
Kremlin critic Alexei Navalny is due back in Moscow later on Sunday for the first time since he was nearly killed by a nerve agent attack last year.
Details are emerging of a raft of executive orders planned by US president-elect Joe Biden as soon as he takes office this week.
All 50 US states and the District of Columbia (DC) are on alert for possible violent protests this weekend, ahead of President-elect Joe Biden's inauguration on Wednesday.
Uganda's long-time President Yoweri Museveni has been re-elected, electoral officials say, amid accusations of vote rigging by his main rival Bobi Wine.
The House speaker, Nancy Pelosi, has said it is possible that members of Congress could face prosecution if found to have “aided and abetted” the violent attack on the Capitol earlier this month that left five people dead.
The UK is to close all travel corridors from Monday morning to "protect against the risk of as yet unidentified new strains" of Covid, the PM has said.
A highly contagious coronavirus variant first detected in the UK could become the dominant strain in the US by March, health officials have said.
President-elect Joe Biden has unveiled a $1.9tn (£1.4tn) stimulus plan for the coronavirus-sapped US economy before he takes office next week.
Russia's unmanned Luna-25 spacecraft has crashed into the Moon after spinning out of control, officials say.
Donald Trump has confirmed that he will not take part in Republican presidential debates with his rivals in the race for the White House.