US President Donald Trump today called for strong measures to combat "radical Islamic terrorism", a day after twin terror attacks killed 14 people and injured around 100 others in Spain.<br/>'<br/><br/>In a tweet Trump said, radical Islamic Terrorism must be stopped by whatever means necessary. The courts must give us back our protective rights.<br/><br/><br/>In another tweet, Trump said the US security forces and law enforcement agencies were on guard and were monitoring the situation<br/>