On 18 May, a patrol of 1/7 Gurkhas were guided by an informer to a camp in the mangrove. They flushed a party of rebels towards an ambush. Ten rebels were killed or captured. They were the remnants of TNKU headquarters and one of the wounded, shot in the hip, was Yassin Affendi.
On 18 May 1972, Queen Elizabeth II visited the Windsors while on a state visit to France; she spoke with the Duke for fifteen minutes, but only the Duchess appeared with the royal party for a photocall as the Duke was too ill.
The tempo of operations increased throughout the first half of May as the United Nations' attempts to mediate a peace were rejected by the Argentinians. The final British negotiating position was presented to Argentina by UN Secretary General Pérez de Cuéllar on 18 May 1982.
Li Peng met with students for the first time on 18 May in an attempt to placate public concern over the hunger strike. Li Peng said the government's main concern was sending hunger strikers to hospital. The discussions were confrontational and yielded little substantive progress or dialogue, but gained student leaders prominent airtime on national television.
On 18 May 2016, Microsoft Mobile sold its Nokia-branded feature phone business to HMD Global, a new company founded by former Nokia executive Jean-Francois Baril, and an associated factory in Vietnam to Foxconn's FIH Mobile subsidiary. Nokia subsequently entered into a long-term licensing deal to make HMD the exclusive manufacturer of Nokia-branded phones and tablets outside Japan, operating in conjunction with Foxconn. The deal also granted HMD the right to essential patents and featurephone software.
A school shooting occurred at Santa Fe High School in Santa Fe, Texas, United States, in the Houston metropolitan area, on May 18, 2018. Ten people – eight students and two teachers – were fatally shot, and thirteen others were wounded. The suspected shooter was taken into custody and later identified by police as Dimitrios Pagourtzis, a 17-year-old student at the school.