Vietnam president quits as Communist Party intensifies graft crackdown- Summary- Companies- President highest-profile casualty of graft crackdown- Phuc blamed for conduct of officials under him- Hundreds of officials hit by 'blazing furnace' campaign- Phuc's downfall widely expectedHANOI, Jan 17 (Reuters) - Vietnam President Nguyen Xuan Phuc has resigned after the ruling Communist Party blamed him for "violations and wrongdoing" by officials under his control, the government said on Tuesday, in a major escalation of the country's anti-graft campaign.Vietnam has been rife with speculation he would be removed following January's dismissal of two deputy prime ministers who served under him, as the party doubles down on a "blazing furnace" anti-corruption drive led by its powerful long-serving chief, Nguyen Phu Trong.Le Hong Hiep of the Vietnam Studies Programme at the Singapore's ISEAS-Yusof Ishak Institute said the purge could pave the way for cleaner more capable leaders to rise.Phuc's resignation requires approval from the legislature, which sources on Monday said would hold a rare extraordinary meeting this week, adding to expectation that Phuc's fate had been sealed.Phuc, who was known in Vietnam for his friendly approach and love for the national soccer team, was once tipped as a future party General Secretary, the state's most prestigious job."