Greek, German tensions rise amid swearing claims
Greek, German tensions rise amid swearing claims · CNBC

Greek Prime Minister, Alexis Tsipras, has been invited to Berlin by German Chancellor Angela Merkel for talks next week, as diplomatic relations between the two countries hits a low point.

Tensions were set on edge after a YouTube video from 2013 emerged at the weekend, purportedly showed Greek Finance Minister, Yanis Varoufakis, "giving the finger" to Germany.

The video features Varoufakis giving a lecture in Croatia in 2013. In it he says that Greece should have defaulted in 2010 "and stuck the finger to Germany," rather than accept financial aid. To date, Greece's has received two bailouts totaling 240 billion euros ($253 billion).

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Varoufakis appears to use his middle finger in a rude gesture when talking of Germany.

Responding to the video on Monday, Varoufakis told German magazine Der Spiegel that it was doctored and that he had "never given the finger, ever." He also took to Twitter to defend himself.

Alessandro Del Prete, who uploaded the video, also took to the social media site on Monday to deny altering the footage.

Greece's financial troubles are set to top the agenda at a European Union (EU) summit scheduled for Thursday and Friday this week.

On Tuesday, an unnamed Greek government official told Reuters that Prime Minister Alexis Tsipras had asked for a meeting with top European policymakers, including Merkel, European Central Bank chief Mario Draghi, French President Francois Hollande and European Commission President Jean-Claude Juncker on the sidelines of the summit.

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Negotiations over the country's bailout program, funding needs and reform agenda could be tense as relations with Germany - its main creditor and driver of austerity measures in the euro zone -- seem to deteriorate more and more each day.

When Marxist-economist-turned-finance-minister Varoufakis and his German counterpart Wolfgang Schaeuble met soon after the new Greek government was elected, they could not even "agree to disagree" over the future of Greece's bailout and, since then, relations have soured further.

Schaeuble recently accused Varoufakis of being "insulting" during bailout negotiations - a charge which Greece then levelled back at Germany last week. Athens has since made a formal complaint against Schaeuble, although the German official dismissed the accusation as "nonsense," according to reports.