Karić later received a Ph.D. from the Institute of Agrarian Economics at the Ukrainian Academy of Agronomy Sciences in 1994, was a founder of the International University of Business and Management in Moscow, and holds a number of academic positions.

[4] During the North Atlantic Treaty Organization (NATO)'s 1999 bombing of Yugoslavia, Karić attended meetings of Russian and American legislators in Vienna in an effort to bring about a peace deal.

[5][6][7] The negotiating teams reached an arrangement that would have seen a stop to NATO's bombing campaign, the withdrawal of Yugoslav troops from Kosovo, and the introduction of a United Nations peacekeeping force in the province.

[13] Weldon acknowledged having received unflattering information about the Karić family from American intelligence sources, though he offered the view that the brothers provided support for the Milošević regime under duress and were unfairly maligned for their actions.

[15] In 2012, Belarusian president Alexander Lukashenko credited him for "significant personal contribution to the development of trade and economic ties and the strengthening of friendly relations between Belarus and Serbia.

[18] Karić joined his brother Bogoljub's Strength of Serbia Movement on its formation in 2004 and led the party's electoral list for the City Assembly of Belgrade in the 2004 Serbian local elections.

He chaired several of Serbia's parliamentary friendship groups, including those with Angola, Bahrain, Belarus, Bhutan, Burundi, Chile, the Democratic Republic of the Congo, Djibouti, El Salvador, Ethiopia, Fiji, The Gambia, Guyana, Kuwait, Latvia, Malawi, Micronesia, Namibia, Nepal, Oman, the Philippines, Rwanda, Sierra Leone,[29] Tajikistan, Tunisia, Uganda, Vietnam, Zambia, and Zimbabwe.

In addition to this, he was a member of Serbia's parliamentary friendship groups with Albania, Algeria, Argentina, Armenia, Austria, Azerbaijan, Belgium, Bosnia and Herzegovina, Brazil, Bulgaria, Cape Verde, China, Croatia, Cuba, Cyprus, the Czech Republic, Denmark, Egypt, Finland, France, Georgia, Germany, Ghana, Greece, Hungary, India, Indonesia, Iran, Iraq, Israel, Italy, Japan, Kazakhstan, Lesotho, Lithuania, Luxembourg, Mexico, Moldova, Montenegro, Morocco, the Netherlands, North Macedonia, Norway, Palestine, Poland, Qatar, Romania, Russia, Saudi Arabia, Slovakia, Slovenia, South Korea, the Sovereign Military Order of Malta, Spain, the countries of Sub-Saharan Africa, Sweden, Switzerland, Syria, Turkey, Turkmenistan, Ukraine, the United Arab Emirates, and Venezuela.