Poland withdrew from a central European summit in Jerusalem after a dispute with Israel over how to characterise Poland's treatment of its Jewish community during the second world war.
Drivers on their way to the Polish capital of Warsaw on Wednesday morning found the road blocked by an unusual obstacle — tons of liquid chocolate that spilled onto the motorway.
As I can show them here in their make-shift camp near the border fence, throwing stones and charging the barricades that are being manned by the Polish border authorities.
In the same year that Hitler invaded Poland, two Jewish scientists exiled from Nazi Germany - Rudolf Peierls, and Otto Frish first realised uranium's power as a weapon of war.
So far in this video, we've met three of Catherine's lovers: the guy who possibly fathered Paul; the guy who became King of Poland; and Orlov, the guy who probably strangled Peter III.
The far-right Italian deputy Prime Minister Matteo Salvini has called on populists from Italy and Poland to launch what he called a new European Spring to replace the center-right influence of Germany and France.