The army says it completed the Morag Corridor as it threatens to expand its operations to 'most of Gaza’s territory'.
The latest exemptions cover imports from China, in first sign of possible softening of US trade war against Beijing.
US-Iran talks on the nuclear issue and sanctions have ended with Iran describing the discussions as “constructive”.
Intervention follows a breakdown in talks between the UK government and British Steel’s Chinese owner, Jingye Group.