Syrian President al-Sharaa, recently dropped from global 'terror' list, pledges cooperation in combating armed group.

Visit comes as Syria announces launching a 'large-scale operation' targeting ISIL cells across the country.

Ahmed al-Sharaa, once branded a terrorist by the US, became the first Syrian leader to visit the White House.

Syrian President al-Sharaa, recently dropped from global 'terror' list, pledges cooperation in combating armed group.