London,July,28:Euro zone is still under intense pressure as deteriorating debt condition raising question on the future of the largest economic block of the world and rating agency Moody is busy in evaluating the rating in this turn they changed its outlook for top-rated Germany, the Netherlands and Luxembourg to negative from stable, warning that they may have to increase support for indebted euro zone states such as Spain and Italy.

Moody's also emphasized that the chance of Greece leaving the euro zone, which "would set off a chain of financial sector shocks ... that policymakers could only contain at a very high cost.

"Moody affirmed Finland's 'Aaa' rating and stable outlook, but it commented that all four European economy were adversely affected by confusion about the depth and spread of the euro area crisis and the likelihood are increasing for greater support by other euro area countries, most notably Spain and Italy.

Moody also reported that load of that support will fall most heavily on the euro zone's top-rated states. Moody report also suggests that the actions on Germany, the Netherlands and Luxembourg mean it now has negative outlooks on the entire nation "whose balance sheets are expected to bear the main financial burden of support."In February Moody has already put France and Austria on negative outlook list.

Finland narrowly escaped a negative outlook partly because of its small and domestically or banking operations, its limited exposure to other economy and marginal trade links with the rest of the euro area, Moody's said.

Ratings agency S&P's has also coined a stable outlook for Germany but negative outlooks for Luxembourg, the Netherlands and Finland. All are given 'AAA'.However rating agency Fitch gives all four economies the top rating and stable outlooks.