Spain and UK in diplomatic row over Gibraltar

Spain imposes new security checks on traffic entering and leaving British colony after artificial reef installed.

Spain is being accused of behaving like North Korea in a dispute over the British territory of Gibraltar.

The comments were made by Gibraltar’s Chief Minister after Madrid, which has never given up its claim on the island, proposed a border crossing fee and an airspace ban as a response to installing of an artificial concrete reef along its coast.

British Prime Minister David Cameron said he was seriously concerned about the situation.

Al Jazeera’s Paul Brennan reports.