World leaders are reacting to the shooting in Ottawa.  US President Barack Obama called the shooting a “senseless act of violence, or terrorism” and pledged support to Canada.  British Prime Minister David Cameron sent a message to this country on Twitter saying he was appalled by today’s attack and offered full support to Prime Minister Harper and the people of Canada “as they deal with this incident”.  United Nations Secretary Ban Ki- Moon says his thoughts are with us and Harper also spoke to Israeli Prime Minister Benjamin Netanyahu.