US, UK ratchet up pressure on Iran as return of UN sanctions nears

Six flags of the Islamic Republic of Iran with Tehran's Milad Tower in the background
Six flags of the Islamic Republic of Iran with Tehran's Milad Tower in the background

The United States on Wednesday called on the United Nations Security Council to confront Iran over its nuclear program, hours after Britain suggested it could trigger a return of UN sanctions if Tehran does not curb its uranium enrichment.