Vienna, Austria: Russian Foreign Minister Sergei Lavrov said Saturday that a string of bloody attacks in Paris justified an even stronger fight against radical jihadists such as the Islamic State group.

‘There is no justification for terrorist acts and no justification for us not doing much more to defeat ISIS and Al-Nusra and the like,’ Lavrov said ahead of an international meeting in Vienna to discuss the war in Syria.

Moscow is attending the meeting of some 20 countries and organisations alongside other key players such as Saudi Arabia, Iran, the United States and France.

After talks with Lavrov, US Secretary of State John Kerry said the attacks, along with bombings this week in Lebanon, only stiffened the resolve of those involved ‘to fight back.’

‘We are in absolute and total agreement that these kinds of attacks are the most vile, horrendous, outrageous unacceptable acts on the planet,’ said Kerry.

‘So we are witnessing a kind of medieval and modern fascism at the same time, which has no regard for life, which seeks to destroy and create chaos and disorder and fear.’