The last time U.S. President Donald Trump visited South Korea in 2019, he made a surprise trip to the border with North Korea for an impromptu meeting with North Korean leader Kim Jong Un to revive faltering nuclear talks.

Now, as Trump is set to make his first trip to Asia since his return to office, speculation is rife that he may seek to meet Kim again during his stop in South Korea. If realized, it would mark the two's first summit since their last meeting at the Korean border village of Panmunjom in June 2019, and fourth overall.

Anyone who watched U.S. President Donald Trump vow to condition financial aid to cash-strapped Argentina on the outcome of a "very big" and "very important" vote in the South American country would be forgiven for thinking that his close ideological ally, Argentine President Javier Milei, was up for reelection.

Russian military planes briefly violated Lithuania's airspace Thursday evening, the Lithuanian president said, condemning what he called a blatant breach of the territorial integrity of his European Union and NATO-member country.

Lithuania's foreign ministry planned to summon Russian Embassy representatives in the Lithuanian capital of Vilnius to protest the violation, President Gitanas Nausėda said in a post on the social media platform X.

Ukrainian President Volodymyr Zelensky is due in London on Friday for talks with two dozen European leaders who have pledged military help to protect his country from future Russian aggression if a ceasefire stops the more than three-year war.

The meeting hosted by British Prime Minister Keir Starmer is also due to discuss ways of helping protect Ukraine's power grid from Russia's almost daily drone and missiles attacks as winter approaches, enhancing Ukrainian air defenses, and supplying Kyiv with longer-range missiles that can strike deep inside Russia.

Four people were killed and another 12 wounded at a train station in northern Ukraine on Friday, police said, when a 23-year-old man detonated an explosive device during document checks.

"State Border Guard Service employees were checking the documents of passengers on a diesel train. At that moment, one of them took out an explosive device on the platform, which then detonated," the national police service said in a statement, adding that the perpetrator was among those killed.

A Ukraine drone crashed into an apartment block in a Moscow suburb on Friday, wounding a young boy and four others, officials said, as both countries traded another night of aerial strikes.

Tensions between the U.S. and China escalated in the weeks leading up to a possible meeting between U.S. President Donald Trump and Chinese President Xi Jinping. In response to recent U.S. restrictions, China plans to expand permitting requirements on rare earth products. Trump has threatened a 100% tariff on Chinese goods. Such is the game between the world's two largest economies, with both sides seeking an upper hand in the highly-watched trade negotiations.

Here's a look at how it unfolded over the past month.

A Sudanese paramilitary force targeted the country's capital and its main airport on Thursday with drones, just a day after the first passenger flight in two years landed in the city, according to military officials and local media.

The attack by the Rapid Support Forces came as the group seeks to maintain pressure against Sudan's military while the deadlocked conflict grinds on.

The European Union on Thursday heaped more economic sanctions on Russia, adding to U.S. President Donald Trump's new punitive measures the previous day against the Russian oil industry.

It is a broadened effort to choke off the revenue that funds Moscow's invasion of Ukraine and to force President Vladimir Putin to negotiate an end to the war.

Iran has been bombed, seen United Nations sanctions reimposed and its economy collapse further into the red this year. But its theocracy so far hasn't taken any major action to halt the slide, restart crucial nuclear negotiations with the West nor fully prepare for possible further hostilities with Israel and the United States.

In the past, Iran's 86-year-old Supreme Leader Ayatollah Ali Khamenei heralded the benefit of Tehran's "strategic patience" in confronting its enemies. Now, however, concern is growing that patience has slipped into paralysis as Iran's partners in its self-described "Axis of Resistance" have been devastated and there's no overt sign of materiel support from either China or Russia.