と[言「い」]わせれば => On the view of N1
Based/focused/depending on
なければならない => Must do A; have to A N4
Can, Should, Must
と[言「い」]うのは => Means, is N3
Information, Report
とあれば => If A N1
Conditional, While
ともなると,ともなれば => When (the time/situation) A N1
Time, Situation
てばかりはいられない => Cannot always A N2
Needs, Requirements
と([思「おも」]う、[言「い」]う、[考「かんが」]える) => That A N4
Particles
ねばならない => Must A N2
Needs, Requirements
から[見「み」]れば => If you think from the standpoint of A N2
Considering, Concerning
それはそうと => By the way N2
Miscellaneous
ばそれまでだ => If A happens, it's over (nothing will be of use) N1
Conditional, While
そういえば => Speaking of .., A by the way, A; N2
Considering, Concerning