Earlier quoted context omitted.
Because the $ is currently so strong against Euro, and others.
Is that going to change anytime soon? Genuinely interested because all currencies, other than USD are depreciating.
This is if one believes they actually care about stabilizing European industry and economy and not rather that they are keen on seeing global chaos for a period of time and a weaker Europe dependent on US instead of having close trade relations with Russia and a thriving domestic industrial sector (which they have with cheap Russian energy, which they don't with sanction and less supplied more expensive substitutes), in service to US's own relative position becoming stronger and maintenance of global hegemony.
Many analysts, particularly leaders form China, have opined on the nature of US periodic "harvesting" through dollar strengthening policy which crushes developing (and now even developed) countries so as to maintain their reserve currency status and relative global strength (even conceding that in short term everyone experiences pain as result). Great speech from Qiao Liang, a Chinese PLA Major-General articulating the nature of the reserve $ and the way US uses it as financial weapon particularly when they strengthen it to temporarily crush world economy [1].
[0] https://en.wikipedia.org/wiki/Plaza_Accord
[1] http://chinascope.org/archives/6458
^From link General Qio Lian quote: "Not many people had a clear understanding of this at the time. People, including economists and financial experts, didn’t realize that the most important thing in the 20th century was not World War I, World War II, or the disintegration of the USSR, but rather the August 15, 1971, disconnection between the U.S. dollar and gold."
Precient insight into developing Ukraine crises, (speech made in 2015):
"Where else did [US] target? Ukraine, the connection between the EU and Russia. Of course there were some problems under Ukraine President Yanukovych’s administration, but the reason that the Americans picked it was not simply because of his problem. They had three goals: teach a lesson to Yanukovych who didn’t listen to the U.S., prevent the EU from getting too close to Russia, and create a bad investment environment in Europe."
^In the context of recent financial sanctions against Russian trade and currency, this is exactly what is happening across Europe right now.