Mass shootings over the Halloween weekend — largely in nightlife districts across the U.S. — left at least six people dead and dozens injured, officials said.

The deadliest violence occurred in Dallas, where a handful of shootings in the city's Deep Ellum neighborhood, a center of music and restaurants, killed four people and injured 15 others, police said.

The UAE is hoping for a breakthrough in negotiations between Iran and the United States while being prepared for the worst, a senior official said on Sunday, following threats of a resumption of the Middle East war.

Iran warned on Sunday that any new war with the United States could last longer than the previous conflict and that U.S. President Donald Trump would not be the one to determine its duration.

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.