Malaysian Deputy Prime Minister Wan Azizah Wan Ismail swears in as parliament member in Kuala Lumpur, on July 16, 2018. Malaysia's Members of Parliament were sworn in on Monday, as the former ruling coalition Barisan Nasional, becoming the opposition for the first time, staged a walkout in protest of the selection of the Parliament Speaker. (Xinhua/Chong Voon Chung)

Malaysian Prime Minister Mahathir Mohamad swears in as parliament member in Kuala Lumpur, on July 16, 2018. Malaysia's Members of Parliament were sworn in on Monday, as the former ruling coalition Barisan Nasional, becoming the opposition for the first time, staged a walkout in protest of the selection of the Parliament Speaker. (Xinhua/Chong Voon Chung)

Former Malaysian Prime Minister Najib Razak walks out of the main hall in Kuala Lumpur, on July 16, 2018. Malaysia's Members of Parliament were sworn in on Monday, as the former ruling coalition Barisan Nasional, becoming the opposition for the first time, staged a walkout in protest of the selection of the Parliament Speaker. (Xinhua/Chong Voon Chung)

Malaysian Prime Minister Mahathir Mohamad (C) arrives to attend the swearing-in ceremony in Kuala Lumpur, on July 16, 2018. Malaysia's Members of Parliament were sworn in on Monday, as the former ruling coalition Barisan Nasional, becoming the opposition for the first time, staged a walkout in protest of the selection of the Parliament Speaker. (Xinhua/Chong Voon Chung)

Malaysia's Members of Parliament attend the swearing-in ceremony in Kuala Lumpur, on July 16, 2018. Malaysia's Members of Parliament were sworn in on Monday, as the former ruling coalition Barisan Nasional, becoming the opposition for the first time, staged a walkout in protest of the selection of the Parliament Speaker. (Xinhua/Chong Voon Chung)