NEW YORK, June 17 — Fifa President Gianni Infantino warned Canada, Mexico and the United States to prepare for a football “invasion” yesterday as the host cities for the 2026 World Cup were revealed.

The first ever World Cup co-hosted by three different countries will also see a record number of teams taking part, increasing by 16 from 32 to 48 as the tournament returns to North America for the first time since the 1994 finals.