International benchmark Brent crude oil sank to below $90 a barrel Monday morning after the two sides halted fire over the weekend.

Brent fell about 6 per cent toward US$91 a barrel, while West Texas Intermediate was below US$84. Read more at straitstimes.com. Read more at straitstimes.com.

After 13 days of attacks on Iran, the United States held fire over the weekend, and Donald Trump's UN envoy said the US president was "giving talks some space".

Oil prices experienced a significant five percent decline on Monday. This drop occurred after the United States and Iran paused strikes over the weekend. Hopes for a diplomatic…