Lê Duẩn's foreign policy was criticised by Hoàng Văn Hoan, who accused him of sacrificing the country's sovereignty. A delegation led by Vitaly Vorotnikov, visited Vietnam during its National Day, the holiday that celebrated the establishment of North Vietnam after the August Revolution and met with Lê Duẩn. Lê Duẩn attended the 27th Communist Party Congress and later met with Gorbachev. Soviet Premier Nikolai Ryzhkov and Anatoly Dobrynin attended Lê Duẩn's funeral.