The U.N. refugee agency now reports that more than 5-million people have fled Ukraine since Vladimir Putin’s Russian troops invaded the country February 24th.

The milestone in Europe’s biggest refugee crisis since World War II was announced Wednesday.

When the number reached 4-million on March 30, the exodus exceeded the worst-case predictions of the Geneva-based U.N. High Commissioner for Refugees.

The receiving countries are providing various forms of support, but they are also calling for international help as they face the unprecedented challenge, especially now as Russia has intensified attacks in Ukraine’s eastern Donbas region.

The mayor of Warsaw says Poland’s capital is at capacity and can’t house more refugees.

Canada’s prime minister says details are coming soon on this country’s effort to send heavy artillery to Ukraine’s military.

And the U.S. military is expected to announce intentions to train Ukrainian forces on heavy artillery weapons, but that the training won’t take place in Ukraine.