Learn Italian: Tutti noi dobbiamo migliorare la cooperazione e l'intesa. - We all must improve cooperation and harmony.

When pairing the quantifier tutto with a tonic personal pronoun like noi, voi, or loro, Italian places tutti (or tutte) directly before the pronoun without any preposition. So, "all of us" is simply tutti noi.

Does the verb dobbiamo agree with tutti or with noi?

The verb agrees with the pronoun noi. Even though tutti comes first, it acts as a modifier. Since the true subject is "we", the verb correctly takes the first-person plural form dobbiamo.

I usually think of "harmony" as l'armonia. What kind of harmony is l'intesa?

The noun l'intesa comes from the reflexive verb intendersi (to understand each other). It specifically means a mutual understanding, a spoken or unspoken agreement, or being on the same wavelength. It is the perfect word for "harmony" in a working or cooperative relationship.

Why are the articles la and l' used before abstract concepts like cooperation and harmony?