Iranian oil offers to China decline due to U.S. sanctions. Crude oil reaching a new all-time high by December 31 at 13.5% YES.

Trade sources say Iranian crude offers to China have declined and prices have risen as Washington's blockade disrupts Tehran's oil shipments.

By Siyi Liu and Chen AizhuSINGAPORE, Aug 21 (Reuters) - Offers of Iranian crude to Chinese buyers have declined and prices have jumped this week as the U.S. blockade has cut…