General strike in Spain

Today in Spain there is being a general strike. Normaly in Spain when the workers unions don't agree with the government's economic policies they go on general strike. (you can leave out ''general'')
But in this period of economic crisis the unions should think  more about what they hope to achieve before they make the decesion to strike. In this moment, our economic situation is poor, so other countries look us very closely, especially they look our risk factor, so Spain should give a good impression to foreign investors.
Today there is a national strike in other countries such as Cyprus, Greece, Portugal and Italy.

I think Spain and Italy aren't in the same situation as Greese or Portugal. Spain haven't yet asked for an economic rescue from the European bank. This gives to other countries more trust in Spain.. Then I guess with this strike this trust is broken.
On the other hand, the Unions in other countries, like France, Germany or England, only are going to celebrate this evening, some protests in the main cities.

Perhaps this could be the best option for Spain, only one protest against the economic cuts and measures from the government.

Finally, I think this strike will change nothing because the Spanish economic policy comes from Europe and the Spanish government doesn't have any leeway.

Although people have the right to protest, they have no power to change anything. The government usually ends up doing what it wants.

General strike in Spain

Today in Spain there is being a general strike. Normally in Spain when the workers'[1] unions don't like the government's economic policies they call for[2] do a general strike.

But in this period of economic crisis the unions should think a lot about calling for to do a general strike. In this moment, because of our to economic level, other countries look at us very closely, especially at they look our risk premium, so Spain must present give a good image for the foreign investors.[3]
Today there are other countries on in general strike like Cyprus, Greece, Portugal and Italy.

I think Spain and Italy aren't in the same situation as of Greece or Portugal. Spain has not haven't ask yet asked for an economic rescue from to the European bank. This gives to other countries about Spain an image of trust about Spain to other countries. Then I guess with this strike, that this trust will be is broken.
On the other hand, the Unions in other countries, like France, Germany or England, only are only going to celebrated this evening with some protests in the main cities.

Perhaps this could be the best option for Spain, only one protest against the economic cuts and measures from the government.

Finally, I think this strike will change nothing because the Spanish economic policy come from Europe and the Spanish government doesn't don't have any leeway.

[1] You do not need to say "workers" but it is not wrong

[2] You could also say "go on" like plsdeluno said, but usually I would say the  UNIONS CALL for a strike and the WORKERS GO on strike.

[3] I could not understand exactly what you wanted to say in this sentence because of the grammatical problems, so I hope this correction makes sense.

You have some grammar issues, but overall this was very readable which is good considering the complex subject.