The Israeli Tennis Center posted a video to their Facebook page on Thursday of MK Avigdor Liberman playing tennis in the middle of the afternoon. The caption on the video stated that the Yisrael Beytenu chairman is a regular visitor at the center and comes to play at least once a week. The video was posted amidst rising frustrations at the idleness in the Knesset nearly two months after its inauguration.The Knesset opened its summer session at the beginning of May and is expected to conclude in the middle of August. Knesset Speaker Yuli Edelstein expressed his frustration at the level of inactivity in the Knesset in a letter to Benjamin Netanyahu where he asked the Prime Minister to make sure Knesset members arrived on time for scheduled meetings and speeches in the plenum. At the beginning of the month in a surprising move, Liberman announced that he would not join Prime Minister Netanyahu's coalition and immediately resigned from his position as the Foreign Minister. Liberman elected to join the opposition after Netanyahu refused to comply with his demands for joining the coalition. Lahav Harkov contributed to this report.