The roller coast ride of the Eurozone talks and imact on global markets hit a downslope on Monday as investor fear that Europe's new deal won't be enough to fix the continent's debt crisis took hold.

U.S. stock futures were down Monday before the market opened 0.63 percent, or 77 points, as enthusiasm for a new fiscal plan from the European Union evaporated. On Friday, global markets had rallied on a deal announced in Brussels, in which all 17 nations that use the euro agree to let a European central authority over see future budgets and impose tigher spending controls and penalties if countries overspend.

But skepticism crept in as investors are unconvinced apparently that the Eurozone has solved its problems and finally has it right in the attempt to solve Europe's sovereign debt crisis. Credit rating agency Moody's summed it up best in a weekly credit report, perhaps, saying last week's summit and plan offers few new measures.

In the end, the the markets are repeating a trend of going up in hopes on the news, only to be dashed days later.

The pattern of previous EU summits seems to be repeating itself. Prices increase ahead of the summit, only to crumble afterwards, said Markus Reinwand of Helaba, according to Reuters.

One problem is that the plan from the summit must still be approved by each member country. In the past, that's proven problematic.

A lot of uncertainty remains. Most of all we have to implement quickly what was agreed, German Finance Minister Wolfgang Schaeuble said in an interview with broadcaster ZDF. We've got to work on that with high urgency. We can't go into our Christmas break already.

Such sentiment was shared by Irish transport minister Leo Varadkar, in an interview with national broadcaster RTE, according to Reuters.

I suspect events will overtake us over the next few weeks. Fiscal co-ordination is a good idea, and it's good that's happening, but it's not going to be enough to solve the problem that we have, Irish transport minister Leo Varadkar told national broadcaster RTE.

Not only was Wall Street heading for a lower open on Monday, but Britain's FTSE 100 fell 0.5 percent to 5,500.94. Germany's DAX dropped 1.8 percent to 5,878, and France's CAC-40 lost 1.2 percent to 3,133. Italy's main stock index also ell 1.9 percent and bond yields rose sharply.

There's an element of flight to quality in the market, said Marc Ostwald, a fixed-income strategist at Monument Securities Ltd. in London, in BusinessWeek. The analysis of the euro-region summit is that it simply isn't enough and there are far too many issues to be clarified, so bonds are well bid.