Sen. Lindsey Graham urged President Donald Trump to go "all-in" for Israel in its conflict with Iran, while other lawmakers prefer a diplomatic end to the conflict to prevent further escalation.

The sixth round of U.S.-Iran nuclear talks will be held on Sunday in Muscat, the Omani foreign minister said on Thursday, after U.S. President Donald Trump reiterated that Tehran would not be allowed to have a nuclear weapon.

Iran has warned it will ramp up its nuclear activities after the United Nations nuclear watchdog’s 35-member board of governors adopted a resolution Thursday declaring it in breach of its non-proliferation obligations.

The IAEA is expected to vote on a draft resolution stating that Iran has not provided answers and is violating commitments regarding the nuclear agreement.

President Donald Trump warned in a recent interview that he is "less confident" that the United States will reach a nuclear deal with Iran.

President Donald Trump said Israel “could very well” strike Iran but that he had advised against an attack while negotiations over Tehran’s nuclear program were ongoing, as the departure of US staff from the region fans concerns about a coming strike.

A source familiar with the details told the Post there is "definitely a chance" that a sixth round of nuclear talks between the United States and Iran will not take place.

Israel is prepared to launch an operation against Iran, sources tell CBS News. Contributor Andrew Boyd breaks down the rising tensions between the countries as President Trump comments on Tehran's nuclear program.