JOHOR BARU: The close ties between Johor and Singapore are further strengthened through cooperation during adversity. This comes after Yayasan Sultan Ibrahim Johor( YSIJ), in continuous collaboration with Temasek Foundation from Singapore, presented donations in the form of face masks, medical supplies and cubic tents to the state government. Johor's Sultan Ibrahim Ibni Almarhum Sultan Iskandar was present during the donation handover ceremony that took place at Istana Polo here on Tuesday( Sept