Egypt's Minister of Investment Ashraf Salman said that the world needs $4.5 trillion to achieve sustainable development goals by 2030, during a speech he delivered before the Egyptian Stock Exchange (EGX) First Sustainable Development Conference., Al-Bawaba News reported Tuesday. The conference is attended by Minister of Social Solidarity Ghada Wali, head of the Egyptian Stock Exchange Mohammad Omran and head of the Egyptian Financial Supervisory Authority Sherif Sami,as well as numerous representatives of business sector and civil society, international organizations.