NEW YORK (Reuters) - Citigroup Inc., the No. 1 U.S. financial services company, shuffled its international executives by naming Robert Morse sole head of global investment banking Thursday and appointing new chiefs for its Europe, Middle East and Africa units.

Morse had been global co-head of investment banking with Michael Klein, who was named chief executive of the company's global corporate and investment bank for Europe, Middle East and Africa (EMEA).

Citigroup named Jean-Paul Votron as head of its consumer group for EMEA. Votron had been CEO of Citigroup's businesses in Central and Eastern Europe.

"This new management sharpens our focus on our core businesses and reflects our decision last year to run our businesses along global product lines in each of the major geographic regions where we operate," Citigroup CEO Sanford "Sandy" Weill said in a statement.

The moves follow another round of changes at Citigroup recently.

The company named Robert Willumstad CEO of its Citicorp and Citibank NA units Feb. 26. William Rhodes was named non-executive chairman of those groups.

Market watchers have long wondered who will replace Weill, who is turning 70 and has yet to name a successor.

Citigroup (C: down $0.05 to $33.12, Research, Estimates) shares were little changed in Thursday morning trading on the New York Stock Exchange.