They two leaders set the foundation for what could be their first face-to-face meeting in July.
US congresswomen have walked out of work, joining women around the world who are going on strike as part of IWD.
Transport has been disrupted and power lines brought down in several regions within the Czech Republic, Austria and Poland.
Planned strikes by British Airways cabin crew on Christmas Day and Boxing Day have been suspended.
The two-day strike over pay began at midnight local time, with Lufthansa saying about 100,000 passengers will be affected.
The Greek Seamen’s Federation have downed tools in response to a reduction of their supplementary pensions.
The attack is said to have hit a three-storey block of flats in Amran City.
This was stated by the authorities of Nigeria.
The CGT union said staff at 16 of France's 19 nuclear plants had voted for a one-day strike.