China firmly opposes illegal unilateral sanctions without a basis in international law and without authorization from the United Nations Security Council, Chinese Foreign Ministry spokesperson Lin Jian said on Tuesday.

Lin made the remarks at a regular press conference in response to a question about US Treasury Secretary Scott Bessent's announcement of a new round of sanctions aimed at Iran's "economic isolation" to further increase pressure on Iran.

"An economic war and maximum pressure will not help resolve the issue. They will only further intensify contradictions and conflicts, cause risks to spill over, disrupt the global economic and financial order, and harm the legitimate rights and interests of other countries," Lin said.