His words come amid renewed controversy over the massacres after remarks last week by Ukraine’s foreign minister.

His words come amid renewed controversy over the massacres after remarks last week by Ukraine’s foreign minister.
PiS, the opposition party, says around 40,000 people have donated so far.
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Belarusian opposition figurehead Sviatlana Tsikhanouskaya has also made a second visit to Warsaw.
Rafał Trzaskowski says his movement aims to find common ground within a Poland “divided like never before”.
A state oil firm is in talks to buy a large number of newspapers from their German owner.
Prosecutors want to bring corruption charges against the judge that she says are politically motivated.
In a joint declaration, the two countries’ presidents also sought to ease tensions over World War Two history.
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Unions are promising further protests.
The Polish government says the remarks evoke painful memories of World War Two.
“There is no place for selfishness,” says the health minister.
The development will “not adversely affect the proper functioning of the government”, says a spokesman.