It is not a secret for anyone that modern Imami shias do believe in 12 Imams.
We would like to present to you quote from shia scholar Faydh al-Kashani regarding those who abandon this belief of shias – all Islamic nation apart from themselves.
Book: “Minhaju Najat”
Author: Faydh al-Kashani.
Printed by Muasasat li Baath, Tehran, 1-st edition, 1407.
And who would reject Imamate of one of them, is like rejected prophecy of all prophets – alaihuma salam.
And Sadiq (alaihi salam) said: The one who rejected last from us is like rejected first from us.
And from messenger (sallalahu alaihi wa ali): Who would reject (not believe in) Ali, his Imama after me, is like the one who rejected my prophecy, and who rejected (didn’t believe in) my prophecy is like the one who rejected Allah and His Rububbiyah.
So don’t be deluded by calls of modern shias to taqrib, because in accordance to their texts and scholars - each and everyone who is not Imami in faith is Kaafir.