BBC World News

1. Canada announces 'dollar-for-dollar' retaliatory tariffs on US as high as 50%

   The latest escalation in an ongoing trade war between the US and Canada will see new levies on goods from steel to furniture, fresh tuna and makeup.

2. China hits out at 'illegal' new US sanctions on Iran and trading partners

   The US has threatened to isolate nations that continue to do business with Tehran, which sells much of its oil to Beijing.

3. CIA chief travels to Moscow for unannounced talks, US media reports

   Flight tracking data confirms an American military aircraft travelled to Russia from the US via Latvia on Tuesday.

4. Mass arrests in global crackdown on West African cyber-crime networks

   The operation included the arrest of 39 people in South Africa for romance and investment scams.

5. Brain disease in dead NFL players 'higher than previously shown'

   A new study says at least one in four ex-NFL players who died between 2016 and 2021 had a degenerative brain disease but the true figure could be much higher.