And the value of any contract with Russia.  These are demonstrated by Russian behavior regarding Russian natural gas flowing through Ukraine to western Europe.

Having won an arbitration dispute with Russian-controlled Gazprom over natural gas shipments to Ukraine, Gazprom and the Kremlin decided not to honor the ruling or the commitment:

Russia is tearing up its contracts to supply Ukraine with natural gas, sparking another stand-off between Moscow and Kiev and raising fears of new gas supply shortages across Europe during the winter.

In response,

European Commission Vice President Maros Sefcovic warned Friday that the situation raised “concerns not only for the direct supply of natural gas to Ukraine but possibly also for the transit of gas to the EU.”

Maybe he also should think about the wisdom of supporting the Russian pipeline across the Baltic Sea to Europe. Flows in that pipe will be just as fragile and vulnerable as the flows through the trans-Ukraine pipe. Russia is just setting up an additional weapon to use against the EU with it.