Malaysia's Prime Minister Mahathir Mohamad meets with Singapore's Prime Minister Lee Hsien Loong at the Perdana Leadership Foundation in Putrajaya, Malaysia on May 19, 2018 in this handout photo

Malaysia’s Prime Minister Mahathir Mohamad meets with Singapore’s Prime Minister Lee Hsien Loong at the Perdana Leadership Foundation in Putrajaya, Malaysia on May 19, 2018 in this handout photo

Malaysia's Prime Minister Mahathir Mohamad meets with Singapore's Prime Minister Lee Hsien Loong at the Perdana Leadership Foundation in Putrajaya, Malaysia on May 19, 2018 in this handout photo. Singapore's Ministry of Communication and Information/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE HAS BEEN PROVIDED BY A THIRD PARTY.

May 28, 2018 3:49 PM (UTC+8)