foreign investors will think twice to invest. So this can affect the economy.
Thats utter garbage.
Bloomsberg, probably the second most important business news source after Reuters says,
"The momentum that's been generated over the past few days is just astounding," said Bartlomiej Sienkiewicz, who heads Othago, a Warsaw-based consultancy that helps firms do business in former Soviet Union countries. "It means the possibility of doing serious business with Russia and breaking the mold of 20 years of strained relations."
bloomberg.com/apps/news?pid=20601109
Economically, this is very good news for Poland, which was already in line for a major boom.