In becoming the first American leader to visit Angola, President Biden said it was important not to forget the ugly legacy that originally defined relations with Africa.

Iran and Russia, both stretched by conflicts of their own, have experienced setbacks in Syria after a rebel offensive in the northwest of the country.

The decree, issued by President Yoon Suk Yeol amid a bitter fight with the political opposition, was the country’s first declaration of martial law since military rule ended four decades ago. Police officers were clashing with protesters outside the National Assembly.

Years of war and a powerful earthquake had led to crushing poverty, displacement and breakdowns in services. But over the last several days, the region’s misery deepened.

The move comes a day after the Biden administration expanded curbs on the sale of advanced American technology to China.

Some violations of the truce, and some amount of violence, are to be expected, analysts say, and do not necessarily mean the deal will collapse and war will resume anytime soon.

World leaders failed to focus on a permanent solution to the Israeli-Palestinian conflict and risk making the same mistake again, the departing United Nations’ envoy in the region says.

An initiative by officials at the monument in a partnership with Airbnb has prompted an outcry among those who feel it will demean a cultural treasure.

President-elect Donald J. Trump said in a social media post on Monday that the hostages must be released before his inauguration in January.