President Joe Biden said on Wednesday he asked the U.S. Defense Department to continue its surge of weapons deliveries to Ukraine after condemning Russia's Christmas Day attack against some of Ukraine's cities and its energy system.

The outgoing and incoming U.S. presidents had different messages for the Christmas holiday on Wednesday, with Democrat Joe Biden urging Americans to reflect and unite, while Republican Donald Trump offered a holiday greeting and then took aim at his political opponents.

President-elect Trump and President Biden bid Americans a merry Christmas as the nation nears a change in presidential administrations.

A high-level government review board has told the White House it is unable to reach a consensus on the national security risks involved in Nippon Steel’s proposed acquisition of U.S. Steel, likely setting the stage for President Joe Biden to kill the deal.

Nippon Steel's $15 billion bid for U.S. Steel has been referred to U.S. President Joe Biden, a White House spokesman said, giving the president 15 days to decide on a tie up he has previously said he opposes.

A powerful government panel has failed to reach consensus on the possible national security risks of a nearly $15 billion proposed deal for Nippon Steel of Japan to purchase U.S. Steel