The most common and most likely answer to this crossword clue is the 14 letter word BIPARTISANSHIP
I've seen this crossword clue in The Times
B
I
P
A
R
T
I
S
A
N
S
H
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P
Buddy explains!

The straight part
We know that "Inclusive approach" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case inclusive approach = bipartisanship.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BIPARTISANSHIP mean?
BIPARTISANSHIP noun- In the context of a two-party system, especially in the United States, cooperation between the competing political parties; governing in a bipartisan manner.