Slovakia's Deputy Prime Minister and Foreign Minister, Miroslav Lajcak says there are many "worrying signals" about the already fragile ceasefire in Ukraine.
New video material purports to show heavy shelling from weapons which would violate the ceasefire in a village close to the border with Russia.
Mr Lajcak was in Ukraine last week.
Now he's in Canberra, and he's speaking here to Karen Barlow.
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