EU's negotiations with Greece's Syriza leadership also about Spain's Podemos

One reason the EU has to take a hard line with the Greek Syriza leadership's demands to renegotiate the Greek bailout package is the EU has to consider its next negotiation with a European Leadership that is making similar demands.  If the EU caves to Syriza, Spain's Podemos party may be encouraged to adopt a similar strategy of demanding a renegotiation of their bailout with the EU. 

Greece will still probably get some type of renegotiation, but the EU has to at least make it hard for Syriza or Podemos won't be far behind after Spanish elections later this year.