The torrent of arctic air that poured into many parts of the United States this week tightened its grip on Saturday and brought record cold to some spots.

South Korea predicted on Tuesday that North Korea would look to open negotiations with the United States next year in an optimistic outlook for 2018, even as Seoul set up a specialised military team to confront nuclear threats from the North.

The United States gives China a draft resolution for tougher U.N. sanctions on North Korea and seeks a ban on ships it says are breaking trade limits with Pyongyang.

U.S. Secretary of State Rex Tillerson on Friday said the United States would not accept any preconditions for diplomatic talks with North Korea, saying the Trump administration and the international community would continue to pressure Pyongyang.

The United States, Japan and South Korea will hold two days of missile tracking drills as tensions rise in the region over North Korea’s fast-developing weapons programmes.

Hundreds protesters gather in New York's Times Square to protest U.S. President Donald Trump's recent decision to have the United States officially recognise Jerusalem as the capital of Israel.

White House National Security Adviser H.R. McMaster said on Saturday that North Korea's nuclear efforts were the 'greatest immediate threat' to the United States and added that Americans should not feel afraid to attend the Winter Olympics in South Korea.

U.S. Defense Secretary Jim Mattis says he cannot imagine the United States ever accepting a nuclear North Korea, warning that its rapidly advancing nuclear and missile programs would undermine, not strengthen, its security.

The United States Coast Guard offloads thousands of pounds of cocaine seized in operations in the eastern Pacific Ocean during September and October.

The trial of a Mexican man accused of murdering a woman while illegally in the United States began in San Francisco on Monday, a case that President Donald Trump has cited as an example of the dangers posed by lax border security.

China may be the world's champion of renewable energy, but its actions abroad are not always in line with a country truly committed to fighting climate change. With the United States planning to quit the Paris climate deal, all eyes have been looking to China - the world's biggest polluter - to step up as climate leader. Although the Chinese have announced a raft of measures to combat emissions at home, overseas projects paint a different picture.

A U.S. judge on Tuesday blocked President Donald Trump's latest bid to impose restrictions on citizens from several countries entering the United States, which had been set to take effect this week.