Kabul: Afghan President Mohammad Ashraf Ghani has vowed to keep up pressure on corruption as the country prepares for the Brussels conference in October, the Presidential Palace said on Friday. On Thursday, Ghani chaired the first meeting of the National High Council for Rule of Law and Anti-Corruption, Xinhua news agency cited a statement as saying. "We witnessed a 22 per cent increase in national revenue last year and we are determined to take practical steps in different areas to fight corruption before the Brussels Conference," Ghani said. Tadamichi Yamamoto, special UN envoy and head of UN mission in the country, welcomed the establishment of the Council and assured cooperation to fight corruption. The conference will focus on the development of Afghanistan.