Kiev: Britain`s embassy in Kiev risked provoking fresh Russian ire on Wednesday by posting a diagram on Twitter "to help the Kremlin spot its tanks" in Ukraine.
"#Putin still denying #Russia`s troops & hardware are in #Ukraine. Here`s a guide to help the #Kremlin spot its tanks," said a post on the @UKinUkraine Twitter feed.
Attached was a graphic featuring the logo of Britain`s Foreign Office showing how to identify a T-72BM Russian tank plus pictures showing sightings of the same tanks "not used by Ukrainian military", in Ukraine.
While Russia denies any military involvement in eastern Ukraine, the West has been fiercely critical of its role and is keeping up heavy pressure on the Kremlin to resolve the crisis.
Russian President Vladimir Putin left last weekend`s G20 summit in Australia early after criticisms from leaders including US President Barack Obama and British Prime Minister David Cameron.
On Tuesday, NATO Secretary-General Jens Stoltenberg spoke of a "very serious build-up" of troops, artillery and air defence systems inside Ukraine and on the Russian side of the border.
The unrest involving pro-Russian rebels and Ukrainian forces in east Ukraine has killed over 4,100 people in the past seven months, according to the United Nations.
A further two Ukrainian soldiers and five civilians were killed in fighting in the east over the past 24 hours, Ukrainian security officials in Kiev said on Wednesday.