Very interesting if this plays out. NSN would have capability to offer full stack mobile networks made all from in house equipment. NSN probably sees this as a tool to fight Ericsson, also Alcatel probably does this already.
On the IP security side Nokia has history in firewalls with their IPSO business, which was sold to Check Point in 2008.
I love JNPR and their products and would hate to see how Nokia might butcher them. Although as long as they left the software alone (particularly on the SRXs), I'd be happy. IPSO, while nice and "advanced" (for its time), was an overly complex beast.
On the IP security side Nokia has history in firewalls with their IPSO business, which was sold to Check Point in 2008.