evidence: The Nord Stream 2 pipeline is a lot more than a business project aimed at shipping natural gas from Russia to Germany under the Baltic Sea — it's turned into a massive diplomatic headache for Washington, Berlin, Brussels, Warsaw, Kyiv and many other capitals. [...] There's furious pressure on U.S. President Joe Biden's administration to slap sanctions on the pipeline and block its completion. Germany's pro-Nord Stream 2 position may shift after upcoming elections. The EU's ability to effectively respond to Russia's military buildup near Ukraine is also questioned, given European reliance on Moscow for a crucial energy source.