MADRID (Reuters) -Spain’s High Court on Tuesday called the chief executive officer of Israel’s software firm NSO Group to testify as a witness in a case opened over the use of its Pegasus software to spy on Spanish politicians. Judge Jose Luis Calama will travel to Israel to question the CEO as part of a so-called rogatory commission to investigate the spying, the court said on Tuesday in a statement, without providing a date for the testimony. The judge opened the investigation after the government said Pegasus software was used to spy on ministers, triggering a political crisis in Spain that…