Reasons to buy the Euro:
ECB said rates going to 3.50%
Soft US CPI
Break of key technical resistance including range top
US renewed attack on Iraq
US eurodollar interest rate futures off 10 ticks, whilst EURIBOR pretty flat
Reasons to sell Euro:
Um, its gone up........
Can't see any reason why anyone can justify a sale of Euros here. Not saying it can't or wont happen but the only reason people seem to be selling it are because it has gone up! Yet look at lindicators like the RSI, it certainly isnt hugely overbought. It has been in a range for ages and it is just possible this break out could be the start of an explosive move up.
If it falls back below 1.2075/90 then that is a different story and would probably be looking to trade from the short side again.
(If you are desperate to sell Euros here perhaps look at eur/£. 6930 was the peak earlier in the week and we havent really broken this level yesterday/today despite the euro/dollar rally. The UK economy is picking up again, esp house prices, and it looks like Vodaphone could announce the sale of its Japanese arm for £40bn in the next few days. The US part could also be sold off.)