october, no ifs or buts. we will not accept any attempt to go back on our promises or scrub that referendum. >> so as parliament reconvenes tuesday after the summer break and protesters gather on the streets of britain, lawmakers look set for an almighty battle over brexit in the coming weeks. bianca nobilo looks at how prime minister johnson got to this point. >> reporter: in the british parliament as on the streets, the battle lines have been drawn for what promises to be the fiercest clash yet in this long-running war over brexit, which has gripped the country for the last three years. prime minister boris johnson digging in on his position to leave the eu by the 31st of october, do or die. opposition parties not going down without a fight. coming together in a rare show of unity to launch a new bill