China's Foreign Ministry said Beijing was firmly opposed to what it called “illegal unilateral sanctions” and would take “all necessary measures” to safeguard its rights.

China calls for dialogue over sanctions as the US announces its toughest-ever Iran measures six months into an active US-Iran conflict.

(Corrects time of press conference in paragraph 2)BEIJING, Aug 24 (Reuters) - China's foreign ministry said on Monday Beijing will closely watch developments and do what is…