The Biden administration is concerned that a weakened Iran could build a nuclear weapon, White House National Security Adviser Jake Sullivan said on Sunday, adding that he was briefing President-elect Donald Trump's team on the risk.

Iran could move to build a nuclear bomb after being weakened by wars in the Middle East, the White House has warned Donald Trump.

Although Iran has one of the biggest supplies of natural gas and crude oil in the world, it finds itself in a full blown energy emergency, coming just as it also suffers major geopolitical setbacks.

After weeks of increasingly severe blackouts caused by massive natural gas shortages in Iran, the state power company warned manufacturers on Friday that they need to brace for power cuts that could last weeks and cost billions of dollars.

The report cited multiple reasons for the situation, among which were the sanctions imposed on the Islamic Republic and Israel's strike on Iran.