US and Russia ally with Saudi Arabia to water down climate pledge

Move shocks delegates at UN conference as ministers fly in for final week of climate talks

The US and Russia have thrown climate talks into disarray by allying with Saudi Arabia and Kuwait to water down approval of a landmark report on the need to keep global warming below 1.5C.

After a heated two-and-a-half-hour debate on Saturday night, the backwards step by the four major oil producers shocked delegates at the UN climate conference in Katowice as ministers flew in for the final week of high-level discussions.