Tag the older half brother of the north korean leader kim jong un

You're referring to Kim Jong-nam, the older half-brother of Kim Jong-un, the current Supreme Leader of North Korea.

Kim Jong-nam was born on May 10, 1971, and was the eldest son of Kim Jong-il, the former Supreme Leader of North Korea, and his mistress, Song Hye-rim. He was the older half-brother of Kim Jong-un, who was born to Kim Jong-il and his third wife, Ko Yong-hui.

Kim Jong-nam was once considered the heir apparent to his father, but he was eventually passed over in favor of his younger half-brother, Kim Jong-un. He was known to be critical of the North Korean government and had been living in exile in Macau, where he was involved in various business ventures.

Tragically, Kim Jong-nam was assassinated on February 13, 2017, at Kuala Lumpur International Airport in Malaysia. He was attacked with a nerve agent, VX, by two women who were believed to be North Korean agents. The assassination was widely condemned by the international community, and it is believed to have been ordered by Kim Jong-un himself.