new delhi, May 20 -- The US president, Joe Biden has imposed heavy duties on electric vehicles, solar panels etc coming from China into the United States. He hopes to protect American workers who have lost their jobs and to boost American manufacturing, which like many other manufacturing industries globally, has been dealt a heavy blow by China.

His political opponent in the forthcoming elections, former President Donald Trump, and other detractors say while this is important, it is 4 years too late.

I believe it an idea that should have been preceded by a series of actions in the previous 4 years. America is the world's biggest greenhouse gas emitter. It is its moral duty to urgently decarbonize. It was also clear even then that banning...