> So I would standby for this tragedy to be used for political purposes
This is an ignorant opinion. For multiple reasons.
Derailing under these circumstances is a track issue, which means ADIF, the state's infrastructure maintainer, is under suspicion. Not operators, the state's infrastructure maintainer.
Liberalization of the railway sector is an EU-wide mandate. It's not some whimsical slip of a single country's leadership.
Years ago there was an AVE derailment in Santiago de Compostela. No one banned RENFE from the lines.
>Derailing under these circumstances is a track issue, which means ADIF, the state's infrastructure maintainer, is under suspicion.
This is the most likely outcome, but it is not as cut-and-dried as you are presenting it.
It could be a broken rail weld, it could be track sabotage, it could be a broken wheel or bogie... we don't know yet.
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