Nov 26 (Reuters) - Belarus's long-standing foreign minister has died suddenly, the state news agency Belta reported on Saturday, two days before he was meant to meet his Russian counterpart.Makei, 64, attended a conference of the Collective Security Treaty Organization (CSTO) - a military alliance of several post soviet states - in Yerevan earlier this week and was due to meet Russian counterpart Sergei Lavrov on Monday.Before the presidential elections and mass anti-government protests in Belarus in 2020, Makei had been one of the initiators of efforts to improve Belarus' relations with the West and had criticised Russia.After Russia's invasion of Ukraine began in February, Makei, a supporter of close ties between Moscow and Minsk, said the West had provoked the war and that the Ukrainian authorities should agree to the Russian terms of peace."We are shocked by the reports of the death of the Head of the Ministry of Foreign Affairs of the Republic of Belarus Vladimir Makei," Russian foreign ministry spokeswoman Maria Zakharova posted in her Telegram channel."