India, Feb. 16 -- US President Donald Trump on Monday denounced a clean energy agreement between the United Kingdom and California hours after it was signed, calling Governor Gavin Newsom "a loser".

In an interview with Politico, Trump said it was "inappropriate" for Britain to be dealing with the Democratic governor.

The Republican leader also branded Newsom "a loser," saying "his state has gone to hell, and his environmental work is a disaster."

The energy agreement Newsom inked with British Energy Secretary Ed Miliband on Monday pledged cooperation on clean energy technologies such as offshore wind, and aims to expand access for British firms to California's market.

Newsom is an outspoken Trump critic and has publicly mulled a 2028...