It is the latest strike in a long trade war, and comes as Canadian counter-tariffs on US goods come into force.

Since beginning his second term, the US president has said he wanted to use the word 'America' to rename a lake, a gulf and even a US state.

Oil prices edged closer to $100 a barrel after an escalation in the tit-for-tat strikes between the US and Iran.

The tenure of Tung Chee-hwa, Hong Kong's first leader after Britain handed over the city to China, was marked by crises and protests.