North Korea’s leader Kim Jong Un has been called “more arrogant” than his father. And this is seen as the reason why China withdraws its support.

In a report by Reuters, Army General Vincent Brooks, Barack Obama’s nominee to lead American forces in South Korea, said that North Korea’s move does not seem optimistic.

“Compared to his father, Kim Jong Un is more aggressive with advancing the North’s nuclear program and ignoring international concerns,” Brooks said in written responses to questions from the Senate Armed Services Committee.

He said that after the demise of Kim’s father, Kim Jong Il, who passed away in 2011, the row of executions of senior officials and other international resolutions that happened reflect its “instability”.

“We now see greater potential for instability as a result of Kim Jong Un’s behaviors and the absence of advisers he is willing to consult,” said Brook in a report by NDTV.

Brook added by saying that Chinese military leaders told him that “they are not influenced with Pyongyang anymore once they used to have”.

“It is my assessment that China is in fact frustrated, yet unwilling to apply pressures that could threaten the viability of the North Korea” regime, he responded to the committee.

North Korea’s fourth nuclear test which was conducted on 6th January 2016, violated the resolutions of U.N. Security Council. The test was an underground nuclear test, which The United States Geological Service reported causing 5.1 magnitude earthquake from its location.

In February, the country fired a long-range rocket which was a banned missile technology test according to the critics. Japan, US, and South Korea condemned the test and called for a meeting with U.N Security Council, who also criticized the test, according to The Guardian.

According to Today Online, North Korea could launch its fifth nuclear test before May.

Also, over its (Intercontinental Ballistic Missile) ICBM program, in March, North Korea talked about the advancement of its miniaturized warhead to be fixed on ballistic missiles.  However, South Korea believed that the country is far away from developing an ICBM.