US-Iran war, April 13 -- China's stock market index Shanghai Composite Index opened flat, declined over 0.39% to 3,971 on Monday, April 13, as investors assessed rising tensions following reports of a US naval blockade of Iranian ports, after Washington and Tehran failed to reach a peace agreement to end the Middle East conflict.

Over the past month, the index has fallen by 2.80%, but it is still up 21.69% compared to a year earlier.

According to media reports, Donald Trump on Sunday renewed his series of warnings against Iran after peace negotiations in Islamabad broke down, while also targeting China.

His remarks came in response to reports suggesting that US intelligence believes Beijing may be preparing to supply weapons to Iran du...