It appears to me that this is a translation of an article published in the Greek language.
For Americans to understand this article, we need to understand the use of language among Europeans. Those on the left of capitalist ideologues have historically tried to co-opt anti-capitalists by using the world "socialist" in the names of their parties. (Remember how even the capitalist funded Nazi party was actually named "National Socialist German Workers' Party"?) Many of these phoney anti-capitalist parties are known as "social democrats" among political scientists. The headline refers to Martin Schultz, a German politician who is a prominent social democrat and has a history of belonging to these phoney "socialist" parties. Such people are being used by European capitalists to bring the Greek debt crisis back under the control of European capitalists.
A potential success of the Leftist government under Alexis Tsipras is considered a threat against the power of the Social democrats in Europe, therefore a threat against the current political status [of capitalist rule].
