U.S. President Donald Trump said overnight that the United States has knocked out much of Iran's military but still has to "take care of" one or two targets, as Tehran warned of reprisals if attacked.

Trump maintained that negotiations with Iran to end the war, which was started by the United States and Israel in February, were "going fine but you know they're not very reliable."

Iran is studying the U.S. proposals contained in a letter from U.S. Vice President JD Vance, amid a positive atmosphere surrounding the path of negotiations and expectations of a breakthrough in the coming period, sources told Al-Arabiya television on Saturday.

Qatari mediators held talks in Tehran for more than 12 hours on Friday in an effort to reach a deal to restart direct negotiations between the U.S. and Iran and avoid an outbreak of war after the midterms, diplomatic sources told U.S. news portal Axios.

Iran's army warned Saturday that any new U.S. attack would only spread their war wider, following threats by America and Israel of further military action as they hold crucial elections.

Ukraine has resumed its attacks on Russian oil refineries after a brief pause, Russia's deputy prime minister said Friday.

There was no immediate comment from Ukraine.

Dockworkers in Europe and beyond were staging strikes on Friday as part of an international campaign against arms shipments and to demand better working conditions, unions said.

Unions in France, Italy, Greece, Spain, Turkey and Morocco issued a joint call to demand an end to the wars in the Middle East, including the war in Gaza, and "an end to the militarization of ports."

Early voting is continuing to significantly outpace the last midterm election, with millions more Americans casting ballots in advance and particularly sharp increases in states hosting competitive Senate races, according to an Associated Press analysis of voting data five days before Election Day.

The surge is especially pronounced in Texas, where voters are deciding closely watched Senate, House and governor's races. More than 6.3 million Texans had voted early as of Wednesday, compared with 4.2 million at the same point four years ago, a 50% increase.

The top diplomats from the Group of 20 largest world economies, including envoys from Russia and China, are meeting in Atlanta as they face deep rifts over multiple wars and other global crises that threaten international security and trade.

U.S. Secretary of State Marco Rubio will chair the gathering Friday and Saturday that will set the stage for a G20 leaders summit hosted by President Donald Trump at his Miami golf club in December.

Serbia 's student movement on Thursday demanded the resignations of top officials in the police, intelligence agencies and the judiciary as they prepare to take power after a historic election win last weekend against former strongman leader Aleksandar Vucic.

The students at a news conference also urged Serbia's election authorities to officially declare the final results of Sunday's ballot without delay after a rerun at some 50 polling stations next Sunday, so that a new Parliament and government can be formed.

Spain's second high-speed rail disaster this year, in which one train struck another from behind, killing 69 people, has raised fresh concerns about the safety of the country's rail network ahead of a national election.

Search teams with sniffer dogs continued to look for victims on Thursday, a day after the collision in central Spain. Cranes shifted the carriages as police and soldiers picked through the wreckage strewn down the gravel slope where at least three train carriages were tossed by the impact.