By Omer Esiner of TravelexThe U.S. dollar firmed back toward the higher end of its recent ranges against the euro and British pound overnight, but slipped against the broadly stronger Canadian dollar. Investors shunned EUR-denominated assets amid signs of a growing rift between Germany and Greece and uncertainty about the outlook for EU assistance for Athens. Resistance on the part of Germany to come to the aid of indebted Greece has prompted officials in Athens to talk of possible IMF assistance, a move that would undermine the European Central Bank's authority and be seen as detrimental to the image of unity within the EU. Conflicting reports have kept uncertainty high, with many seeing next week's EU summit as a critical event in any EU plans to aid Greece. Failure to reach some agreement would further dent the appeal of the euro and likely see it retest its recent lows. The Canadian dollar rose back toward a 20-month peak this morning, after an upside surprise to February's CPI raised the risk of Bank of Canada monetary tightening earlier than previously expected. The hotter-than-forecast numbers offset the pullback in crude oil prices toward this week's lows below $82 a barrel. With no U.S. economic data on tap for today, consolidation is likely to be the session's main theme. Softer stocks and commodities would likely see the greenback wind down the week near the upper end of its ranges. EUR: The euro succumbed to renewed selling pressure across the board once again overnight, underscoring the notion that investors continue to view EUR strength as a selling opportunity. The euro fell as investors continued to worry about the outlook for Greece and other highly indebted euro zone nations like Spain, Portugal, Ireland and Italy. Resistance on the part of Germany to come to the aid of fellow EU member Greece has fanned concerns that a framework for internal resolution to the debt crisis may prove unachievable. Greece's prime minister said yesterday that his government's strict austerity plan to bring its budget deficit down would be nearly impossible to implement if Greece is forced to borrow at excessively high market rates. Investors are charging the Greek government nearly double what Germany must pay to borrow, which exacerbates the Athens' deteriorating fiscal situation. The prime minister said that a lack of assistance from the EU would force Greece to seek help from the IMF as a last resort.