The disintegration of Soviet Union was one of the most important events that altered the global geo-politics after the second world war. Consider the following statements in this regard and choose the correct one/s.

1. A coup took place in 1991 that was encouraged by Communist Party hardliners.

2. Boris Yeltsin emerged as a national hero in opposing this coup.

3. In December 1991, under the leadership of Yeltsin, Russia, Ukraine and Belarus, three major republics of the USSR, declared that the Soviet Union was disbanded.