Mr Wallace has issued a warning over Russia “regularly” sending warships and submarines to British waters. He has revealed that, since 2013, there have been over 150 instances of Russian naval vessels detected in UK waters.
Speaking to The Telegraph, Mr Wallace said: “We have tried de-escalation, we have tried methods but at the moment until Russia changes its attitude, it’s quite hard to see where we’re going to go.
“This is a country that killed someone in Salisbury.”
The defence secretary’s comments follow Vladimir Putin’s warning to world leaders on Thursday.
Speaking to Russian officials, Mr Putin said the Kremlin’s enemies would “knock their teeth out” if they tried to take a “bite” off parts of his country.
He said: “Everyone wants to bite us or bite something off us, but those who would like to do so should know that we would knock their teeth out so that they couldn’t bite.
“The development of our military is the guarantee of that.”
Mr Putin spoke after a US-Russia conference in Iceland about ongoing issues after months of tensions between the super-nations.
Antony Blinken, US Secretary of State, sat down with foreign minister Sergey Lavrov in what Russian reporters called a “constructive” meeting.
READ MORE: Putin issues chilling threat to enemies – ‘Knock their teeth out’
Commentary by The Royal United Services Institute (RUSI), a leading UK defence and security think tank, said the UK’s negligence to “engage in retaliatory diplomatic or financial measures” suggests the UK is unlikely to opt for a “more muscular approach favoured by the US.”
It added that the UK’s current efforts are “highly unlikely to force significant changes in Russian behaviour.”
On Monday and Tuesday next week, the European Council is set to sit down for a special meeting to hold a strategic debate on Russia.
In an invitation letter to members of the European Council, President Charles Michel, said Russia’s “illegal and provocative steps” have continued within EU member states and beyond.