Boris Johnson's pledge to not pay Brexit bill would be a sovereign default says Macron

Boris Johnson is leading the race to become next UK PM

Earlier post on a promise:

• Meanwhile in the race to become the next UK PM - Boris Johnson promises a tax cut

Also over the weekend, BIJ said he would withhold the previously agreed Brexit payment until the EU gave Britain better exit terms.

French President Macron said that failure to pay the 39 bn Brexit bill when Britain leaves the European Union would be to a sovereign debt default. Reuters citing a source close to Macron.