Biden, who also spoke with Kurdistan Regional Government President Massoud Barzani, stressed in the calls that the United States supports “ongoing efforts to convene a dialogue among Iraqi political leaders,” the White House said in a statement released during President Barack Obama’s holiday in Hawaii.

Biden has played a leading diplomatic role alongside the US military’s departure from Iraq this month, traveling to Iraq and engaging Iraqi leaders about signs of rising sectarian tensions in the country that Washington invaded in 2003.