World leaders on Wednesday expressed condolences over the expiry of U.S. Senator Edward Kennedy. The septuagenarian was struggling with brain cancer for the past one year and finally succumbed to it. He was 77. Senate is the upper house of the U.S. Congress, to which two members are elected from each state of US by popular vote for a six-year term. A member of senate is referred to as senator. He and former late US president John Kennedy were siblings(brothers). UNO general secretary Ban’s in his condolence message has said that Edward was not merely a friend of VIP’s but also moved freely with the downtrodden people. This was a testimony to the greatness of Edward. Osama lamented that an important chapter in the history of US has come to an end. Obama placed an order that the flag of the United States shall be flying at half-staff at the White House and upon all public buildings to as a mark of mourning the great leaders death. Some former U.S. presidents too have mourned for his death.