North Korean dictator Kim Jong Un promotes sister Kim Yo Jong to key position of ruling Worker's Party of Korea

In a major development, North Korean dictator Kim Jong Un has promoted his younger sister Kim Yo Jong to a new post at the ruling Worker's Party of Korea. 

The promotion happened to mark the 20th anniversary of Kim Jong Il's acceptance of the title of general secretary. The position is that of  alternate member of the decision-making political bureau of the party's central committee. 

The elevation happened on Sunday night in the presence of thousands, mostly youngsters who gathered at the Kim II Sung square in Pyongyang and marked the anniversary with dance and firework.  

In his address to the gathering Kim asserted North Korea's defiance of the US and promised to revive the economy amidst international sanctions.