Tensions run high at Republican convention in US

Several hundred Donald Trump supporters — a few of them openly carrying guns as allowed under Ohio law — gathered for the first major pro-Trump rally of the four-day Republican National Convention.

The ambush killings of police officers earlier this month in Dallas and in Baton Rouge, Louisiana, over the weekend have raised tensions in Cleveland, with the president of the police union asking Ohio governor John Kasich to suspend the law allowing gun owners to carry firearms in plain sight.

Mr Kasich responded that he does not have that authority.