EU & Eurozone "naked" against global winds (or whims)?

While xenophobia tries to scapegoat immigrants:

Are the EU and its Eurozone defenceless vis-a-vis the global financials winds (or whims)?

Are they also defenceless vis-a-vis the global hikes in the prices of energy and staple foods?

Can the EU do something about them? Does it have the will to (via real union)?

Time we start talking of EU or Eurozone or EUroplus "sovereignty"?